Mechanical movement.



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LVER P. UNDERWOQD, OF NDIANOLA, OWA.

MECHANICAL MOVEMENT.

ini senso.

Specification of Letters Patent.

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2b al] wim/n it may concern Be it known that l, @Livnn UNDER- woon, a citizen of the United States, residing at lndianola, in the county of Vilar-ren 5 and State of iowa, have invented a certain new and useful Mechanical Movement, of which the following is a specification.

My invention relates to that class of mechanical movements adapted for use in enw gines in which a number of cy inders are arranged in parallel planes in a circle and all of them have their pistons connected to a universal shaft located eoncentrically relative to the cylinders and which are so arranged as to successively giveto the shaft a rotary impulse through a part .of the revolution of the shaft.

My object is to provide in a device of this class simple and durable means for transmitting the longitudinal motion of the pistons to a rotary motion as applied to the crank wheel in such a manner that all"of the pistons may be operated successively and each will` impart to thc crank wheel its 2,5 maximum energy.

rEhe ligure shows a central, longitudinal, sectional view through a complete engine embodying my invention.

Referring to the :,mcompanying drawings,

i have used the reference numeral 1() to indicate the engine casing. viounted in one end of the engine casing is a short power shaft 11 having a ily wheel 12 .fixed thereto, and on the other end of the power shaftv is a crank wheel f3, At the opposite ond of the casing is a series of engine cylinders 1-1 arranged parallel with each other and in a circle, the center of said group of engine cylinders being in line with the center 4 0 of the power shaft. Surrounding all of said cylinders is a water jacket 15 for cooling purposes. Contained within the central space between the engine cylinders is a cylinder 16 to receive the engine valve operating mechanism. Mounted within this cylinder 16 is a rotary engine shaft 17 having a crank wheel 18 at one end. Mounted at the end of the cylinder 1G nearest the engine shaft is a cross head 19 curved at its central portion in a direction tovard the power shaft and having at its center a sul stantially 4spherical bearing member 20 which entends in a direction away from the power shaft.

For operating the crank wheel 13, l' have 5 provided an operating shaft 21 having one end rotatably nicalntedl in the crank wheel and having at its other end a bearing socket 23 to receive the spherical bearing member Q0. Beyond the said bearing member, the shaft is provided with an extension 24 having a ball thereon extended into a socket formed in the crank wheel 18.

Mounted within eachof the cylinders is a piston 2G of ordinary construction and having arranged therein two guide-ways 27 at opposite sides thereof, said guide-ways being arranged radially relative to the longitudinal center of the entire engine. In each otV said guide-ways is a cross head 28 radially slida ble with relation to the longitudinal axis of the engine and provided with a socket 29. ln each of the socketsv 29 is a ball 30 and each ball is provided with a rigid arm 31 curved in a direction, rst away from the longitudinal center of th-Q enginc, and then toward the longitudinal center of the engine, and its other cnd is connected to the operating shaft 21.

in the practical operation ofthis portion` of the engine and assuming that the piston shown at the tcp of the iigure is moved in a direction toward the ily wheel 12, this movement will impart to the outer end of the operating shaft 21 a segmental movement which will 'turn the crahk Wheel 13 a part revolution; then as the outer end of the shaft 21 moves to the position shown by dotted lines in the figure, the cross head 28 will move outwardly relative tothe longitudinal center of the engine as also illustrated hv dotted lines. Each of the other arms 31 and the corresponding pistons 26 will have the same movement imparted to them successively, and by this arrangement and assuming that the pistons were successively moved, the outer end of the shaft 21 will he given a circular movement which will carry with it the crank wheel 13 and the power shaft, and on account of the simple arrangement of the parts friction will be reduced to a minimum. rThe shaft 17 willalso be rotated in unison with the shaft 11 by means of the extension 24 and the crank wheel 1S.

claim as my invention:

In a device of the class described, a support, a power shaft mounted thereon, a crank mounted on said power shaft, an operating shaft operatively connected with said crank, and having one end universally movable about the line of the longitudinal axis of said power shaft, a plurality of arms secured to said operating shaft, a plurality of members mounted on said support, a

member radially slidable Within each of said plurality of members7 means foroperatvely connecting each of said arms with one of said sliding members to permit sliding motion of the arms with relation to said iXed members on radial lines around the line of l ,the longitudinal axis of the power shaft, and

also arranged to permit radial pivotal moveo ment of said Iarms with relation to said sliding members.

Des Moines, Iowa, Dee. l5, 1909.

OLIVER P. UN DERVOOD.

lVitnesses:

M. B. GOLDZEN, M. WALLACE. 

